Table of Contents
Preface
...............................................................................................................
15
1. NetDefendOS Overview
....................................................................................
17
1.1. Features
................................................................................................
17
1.2. NetDefendOS Architecture
......................................................................
20
1.2.1. State-based Architecture
...............................................................
20
1.2.2. NetDefendOS Building Blocks
.......................................................
20
1.2.3. Basic Packet Flow
........................................................................
21
1.3. NetDefendOS State Engine Packet Flow
.....................................................
24
2. Management and Maintenance
............................................................................
29
2.1. Managing NetDefendOS
..........................................................................
29
2.1.1. Overview
...................................................................................
29
2.1.2. The Default Administrator Account
.................................................
30
2.1.3. The Web Interface
.......................................................................
30
2.1.4. The CLI
.....................................................................................
36
2.1.5. CLI Scripts
.................................................................................
44
2.1.6. Secure Copy
...............................................................................
48
2.1.7. The Console Boot Menu
...............................................................
50
2.1.8. Management Advanced Settings
.....................................................
52
2.1.9. Working with Configurations
.........................................................
53
2.2. Events and Logging
................................................................................
59
2.2.1. Overview
...................................................................................
59
2.2.2. Log Messages
.............................................................................
59
2.2.3. Creating Log Receivers
.................................................................
60
2.2.4. Logging to MemoryLogReceiver
....................................................
60
2.2.5. Logging to Syslog Hosts
...............................................................
60
2.2.6. Severity Filter and Message Exceptions
...........................................
62
2.2.7. SNMP Traps
...............................................................................
62
2.2.8. Advanced Log Settings
.................................................................
64
2.3. RADIUS Accounting
..............................................................................
65
2.3.1. Overview
...................................................................................
65
2.3.2. RADIUS Accounting Messages
......................................................
65
2.3.3. Interim Accounting Messages
........................................................
67
2.3.4. Activating RADIUS Accounting
.....................................................
67
2.3.5. RADIUS Accounting Security
........................................................
68
2.3.6. RADIUS Accounting and High Availability
......................................
68
2.3.7. Handling Unresponsive RADIUS Servers
.........................................
68
2.3.8. Accounting and System Shutdowns
.................................................
69
2.3.9. Limitations with NAT
...................................................................
69
2.3.10. RADIUS Advanced Settings
........................................................
69
2.4. Monitoring
............................................................................................
71
2.4.1. The Link Monitor
........................................................................
71
2.4.2. SNMP Monitoring
.......................................................................
73
2.4.3. Hardware Monitoring
...................................................................
76
2.4.4. Memory Monitoring Settings
.........................................................
78
2.5. The
pcapdump
Command
........................................................................
80
2.6. Maintenance
..........................................................................................
83
2.6.1. Auto-Update Mechanism
...............................................................
83
2.6.2. Backing Up Configurations
...........................................................
83
2.6.3. Restore to Factory Defaults
............................................................
85
3. Fundamentals
...................................................................................................
88
3.1. The Address Book
..................................................................................
88
3.1.1. Overview
...................................................................................
88
3.1.2. IP Addresses
...............................................................................
88
3.1.3. Ethernet Addresses
.......................................................................
90
3.1.4. Address Groups
...........................................................................
91
3.1.5. Auto-Generated Address Objects
....................................................
92
3.1.6. Address Book Folders
...................................................................
92
4